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Patent Agency Ranking
公开(公告)号：US20180358840A1
公开(公告)日：2018-12-13
申请号：US16107932
申请日：2018-08-21
Applicant: SOUTHEAST UNIVERSITY
Inventor： Wei GU , Guannan LOU , Suyang ZHOU , Zhi WU , Ge CAO
Abstract: A decentralized voltage control method for a microgrid based on nonlinear state observers, comprising the steps of step 10), establishing a large-signal model of distributed generations, a connection network and impedance-type loads in the microgrid; step 20), establishing a Luenberger-like nonlinear state observer for each distributed generation; step 30), estimating the dynamic characteristics of other distributed generations in real time based on the local measured values of each distributed generation; and step 40), implementing the decentralized voltage control based on the control requirements of reactive power sharing and voltage restoration. The control method realizes the voltage control of microgrid based on the decentralized state observers, which does not rely on communication transmission or remote measurement and avoids the adverse effects of communication latency and data drop-out on the control performance.
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公开(公告)号：US20230052730A1
公开(公告)日：2023-02-16
申请号：US17978149
申请日：2022-10-31
Applicant: SOUTHEAST UNIVERSITY
Inventor： Wei GU , Shan SONG , Suyang ZHOU , Zhi WU
Abstract: A method for predicting the operation state of a power distribution network based on scene analysis is provided, comprising the following steps of step 10) obtaining the network structure and historical operation information of a power distribution system; step 20) extracting representative scene sequence fragments of output of the DGs according to historical output sequences of the DGs; step 30) obtaining a multi-scene prediction result of a future single-time section T0 through matching the historical similar scenes; step 40) establishing a future multi-time section operation scene tree; and step 50) deeply traversing all scenes in the future multi-time section operation scene tree, performing power distribution network load flow analysis for each scene, calculating the line current out-of-limit risk and the busbar voltage out-of-limit risk of the power distribution network, and obtaining a future operation state variation tendency of the power distribution network with the DGs.
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3.发明申请公开(公告)号：US20200212710A1
公开(公告)日：2020-07-02
申请号：US16639744
申请日：2018-04-27
Applicant: SOUTHEAST UNIVERSITY
Inventor： Wei GU , Shan SONG , Suyang ZHOU , Zhi WU
Abstract: A method for predicting the operation state of a power distribution network based on scene analysis is provided, comprising the following steps of step 10) obtaining the network structure and historical operation information of a power distribution system; step 20) extracting representative scene sequence fragments of output of the DGs according to historical output sequences of the DGs; step 30) obtaining a multi-scene prediction result of a future single-time section T0 through matching the real time scene with historical similar scenes; step 40) establishing a future multi-time section operation scene tree; and step 50) deeply traversing all scenes in the future multi-time section operation scene tree, performing power distribution network load flow analysis for each scene, calculating the line current out-of-limit risk and the busbar voltage out-of-limit risk of the power distribution network, and obtaining a future operation state variation tendency of the power distribution network with the DGs.
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4.发明申请公开(公告)号：US20190074691A1
公开(公告)日：2019-03-07
申请号：US15763733
申请日：2016-12-16
Applicant: SOUTHEAST UNIVERSITY
Inventor： Wei GU , Ge CAO , Wei LIU , Zhi WU , Suyang ZHOU , Guannan LOU
Abstract: The invention discloses a general distributed control method for multi-microgrids with both PQ controlled and droop controlled distributed generators, which comprises the following steps of: step 10) conducting primary control to maintain the power balance of the multi-microgrids; step 20) determining predefined group consensus values of pinned agents; step 30) seeking group consensus among other agents and the pinned agents through communication coupling; and step 40) adjusting output powers to complete secondary control. Based on pinning control, the control method which adopts hierarchical control is a distributed control method for distributed power supply clusters with two control modes comprising PQ control and droop control. The method obviates the requirements for a central controller and complex communication topologies, reduces the number of the controllers, can be adapted to the communication topology changes in the multi-microgrids, and meets the plug-and-play requirement for the distributed power supply.
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公开(公告)号：US20180356105A1
公开(公告)日：2018-12-13
申请号：US16107958
申请日：2018-08-21
Applicant: SOUTHEAST UNIVERSITY
Inventor： Wei GU , Chenyu WU , Zhi WU , Suyang ZHOU , Ping JIANG
CPC classification number: F24D19/1048 , F24D3/02 , F24D3/1075 , F24D12/02 , F24D13/00 , F24D2200/08 , F24D2200/15 , F24D2200/32 , G05B17/02 , H02J3/46 , H02J2003/007
Abstract: A CHP optimal dispatching model is a mixed integer programming model and is used for a district heating system (DHS) comprising a heat source, a heating network and a heat load, and the heating network comprises a heat transmission network and a heat distribution network. A plurality of heating areas is divided, and one day is divided into a plurality of time periods; the heat transmission loss of the heat distribution network is omitted, and a heat transmission network model taking transmission time delay of the heating network into consideration is established according to the heat transmission network; a terminal heat consumer model capable of reflecting indoor temperature is established; and a combined optimal dispatching model comprising conventional generators, wind power units, CHP units, electric boilers and heat storage tanks is established.
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